Decision Workspace
umf vs vllora_llm vs langdb_core
Side-by-side comparison of Rust crates
64
umf
experimentalv0.2.4
Universal Message Format (UMF) - Provider-agnostic message representation for LLM interactions with ChatML formatting, internal hub model, and MCP support
54
vllora_llm
experimentalv0.1.23
LLM client layer for the Vllora AI Gateway: unified chat-completions over multiple providers (OpenAI, Anthropic, Gemini, Bedrock, LangDB proxy) with optional tracing/telemetry.
53
langdb_core
growingv0.3.2
AI gateway Core for LangDB AI Gateway.
Core Metrics
| umf | vllora_llm | langdb_core | |
|---|---|---|---|
| Health Score | 64 | 54 | 53 |
| Total Downloads | 608 | 523 | 7.0K |
| 30d Downloads | 130 | 61 | 50 |
| Dependents | 212 | 36 | 19 |
| Releases | 10 | 12 | 12 |
| Last Updated | 16d ago | 56d ago | 178d ago |
| Age | 4m | 3m | 1y 1m |
Health Breakdown
umf
Maintenance
18
Quality
16
Community
12
Popularity
3
Documentation
15
vllora_llm
Maintenance
17
Quality
11
Community
10
Popularity
3
Documentation
13
langdb_core
Maintenance
11
Quality
12
Community
12
Popularity
5
Documentation
13
Technical Details
| umf | vllora_llm | langdb_core | |
|---|---|---|---|
| Version | 0.2.4 | 0.1.23 | 0.3.2 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT OR Apache-2.0 | Apache-2.0 | Apache-2.0 |
| Dependencies | 6 | 34 | 49 |
| Crate Size | 36KB | 175KB | 241KB |
| Features | 7 | 2 | 2 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2021 | 2021 | 2021 |
| MSRV | 1.70 | — | — |
| Owners | 1 | 1 | 2 |
Links
Quick Verdict
- •umf leads with a health score of 64/100, but none of the options score above 80.
- •langdb_core has the most downloads (7.0K), suggesting wider adoption.
- •umf is depended on by 212 crates — strongest ecosystem trust.